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The BQ51221 device is a fully contained wireless power receiver capable of operating in both the WPC and PMA protocols which allows a wireless power system to work with both WPC and PMA inductive charging standards. The BQ51221 device provides a single device power conversion (rectification and regulation) as well as the digital control and communication for both standards. It also has autonomous detection of protocol and requires no additional active devices. The BQ51221 device complies with the WPC v1.1 and PMA communication protocol. Together with the WPC or a PMA primary-side controller, the BQ51221 device enables a complete wireless power transfer system for a wireless power supply solution. The receiver allows for synchronous rectification, regulation and control and communication to all exist in a market-leading form factor, efficiency, and solution size.

The BQ76PL536A is a stackable three to six series cell lithium-ion battery pack protector and analog front end (AFE) that incorporates a precision analog-to-digital converter (ADC); independent cell voltage and temperature protection; cell balancing, and a precision 5-V regulator to power user circuitry. It integrates a voltage translation and precision analog-to-digital converter system to measure battery cell voltages with high accuracy and speed. It provides full protection (secondary protection) for overvoltage, undervoltage, and over temperature conditions. When safety thresholds are exceeded, the bq76PL536A sets the FAULT output. No external components are needed to configure or enable the protection features. Cell voltage and temperature protection functions are independent of the ADC system. Programmable protection thresholds and detection delay times are stored in Error Check/Correct (ECC) OTP EPROM, which increases the flexibility and reliability of the battery management system.

The BQ25892 is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The device support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.

The BQ25100 is a highly integrated Li-Ion and Li-Pol linear charger targeted at space-limited portable applications. The high input voltage range with input overvoltage protection supports low-cost unregulated adapters. The BQ25100 has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hour safety timer. The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops and charge termination. The pre-charge current and termination current threshold are programmed via an external resistor on the BQ25100. The fast charge current value is also programmable via an external resistor.

The
BQ33100 Super Capacitor Manager is a fully integrated, single-chip, solution
that provides a rich array of features for managing, charge control,
monitoring, and protection, for either 2, 3, 4 or 5 series Super Capacitors
with individual capacitor monitoring and balancing or up to 9 series capacitors
with only the stack voltage being measured. With a small footprint of 7.8 x 6.4
mm in a compact 24-pin TSSOP package, the BQ33100 maximizes functionality and
safety while dramatically increasing ease of use and cutting the solution cost
and size for Super Capacitor applications. Using its integrated
high-performance analog peripherals, the BQ33100 measures and maintains an
accurate record of available capacitance, state-of-health, voltage, current,
temperature, and other critical parameters in Super Capacitors, and reports the
information to the system host controller over a 2-wire SMBus 1.1 compatible
interface. The BQ33100 provides firmware controlled protection on overvoltage,
over-temperature, and overcharge along with hardware controlled protection for
overcurrent in discharge and short circuit protection during charge and
discharge.